#!/bin/sh
PREREQ_ERROR=0

LIBCURL_SO=`ldconfig -p | grep "libcurl" | awk -F ">" '{print $2}' | awk -F " " '{print $1; exit 0}'`
if [ -z "$LIBCURL_SO" ]; then
   echo "Error: Please install curl."
   PREREQ_ERROR=1
fi


# test for availablity of gpg
which gpg 1> /dev/null 2> /dev/null
if [ $? -ne 0 ]; then
    echo "Error: gpg needs to be installed and available in PATH"
    PREREQ_ERROR=1
fi

if [ $PREREQ_ERROR -eq 1 ]; then
    exit 1
fi

# pythonVersion check must be repeated for each section
version=$(python3 -V 2>&1 | grep -Po '(?<=Python )(.+)')
if [ ! -z "$version" ]; then
  echo "Using python3"
  pythonVersion="python3"
else
  version=$(python2 -V 2>&1 | grep -Po '(?<=Python )(.+)')
  if [ ! -z "$version" ]; then
    echo "Using python2"
    pythonVersion="python2"
  else
    echo "Python not found."
  fi
fi
# Only check for ctypes if python2 is installed
if [ "$pythonVersion" = "python2" ]; then
   echo "Checking for ctypes python module..."
   python2 -c "import ctypes" 1> /dev/null 2> /dev/null
   cmdline_ctypes=$?
   if [ $cmdline_ctypes -ne 0 ]; then
      echo "Error: Python does not support ctypes on this system.  Please install the ctypes module for Python or upgrade to a newer version of python that comes with the ctypes module."
      echo "Please remove the omi package and try again after installing the ctypes module or upgrading Python.  You can check if the ctypes module is installed by starting python and running the command: 'import ctypes'"
      exit 1
   fi
fi

echo "Cleanning up existing dsc_hosts..."
kill $(ps -eo pid,cmd | grep '/opt/dsc/bin/dsc_host' | grep -v grep | tr -s ' ' | sed 's/^[ \t]*//' | cut -d' ' -f1) -9 2&>1 > /dev/null
chmod -R 777 /opt/dsc
# Clean dsc directory in case of install and clean
echo "Deployment operation type :" $1
if [ "$1" = "1" -o "$1" = 1 -o "$1" = "install" -o "$1" = "clean" ]; then
    echo "Cleanning directory /opt/dsc..."
    rm -rfv /opt/dsc
fi
rm -f /etc/opt/omi/conf/omsconfig/inventory_lock
echo "Cleaned up existing dsc_hosts..."

exit 0